<!DOCTYPE HTML>
<html>
<head>
<title>font-variant-position fallback</title>
<meta charset="UTF-8">
<style>

/* sups: 0-9 + - ( ) =  subs: 0-9 + - ( ) */
@font-face {
  font-family: subsuper;
  src: url(../fonts/subsuper.woff); /* FiraSans with blank omega */
}

body {
  margin: 20px;
  font-family: subsuper, sans-serif;
}

p {
  margin: 10px;
  font-size: 50px;
  line-height: 2;
  width: -moz-fit-content;
  background: black;
}
h4 { font-weight: normal; }
span { font-size: 0.667em; } /* see NS_FONT_SUB_SUPER_SIZE_RATIO_LARGE */
</style>
</head>
<body>
<h4>The black bars should NOT be the same length</h4>
<p>&nbsp;XXXXXXXXXX&nbsp;</p>
<p>&nbsp;X<span>XXXXXXXX</span>X&nbsp;</p>
<p>&nbsp;X<span>XXXXXXXX</span>X&nbsp;</p>
</body>
</html>
